Synthesis,structure, and thermal properties of 3-D coordination polymers constructed from asymmetrical carboxylates |
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Abstract: | Three new coordination polymers constructed from asymmetric ligands were synthesized under hydrothermal conditions and characterized with single crystal X-ray analysis, infrared, and thermal gravimetric methods. Complex 1 exhibits a 3-D network constructed from rod-shaped secondary building units. Pyrimidine-4-carboxylic acid (bpa) was used as the starting material, but under hydrothermal conditions bpa formed 2,2′-pyrimidine-4,4′-dicarboxylic acid (bpda) in situ, which further connected with Pb. 3-D two-fold interpenetration of complex 2 was obtained by the similar method as described for 1, except that Cd(NO3)2 · 6H2O was used instead of Pb(NO3)2 · 6H2O to react with bpa. Complex 3 shows a three-connected 3-D network. Furthermore, the photoluminescence properties of 1 and 2 were studied. |
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Keywords: | Coordination polymer Asymmetrical carboxylates 3-D network Photoluminescence property |
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